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7/28/2019 AIA Commissioning Presentation
http://slidepdf.com/reader/full/aia-commissioning-presentation 1/25
UNDERSTANDING BUILDING
COMMISSIONING
Douglas S. Lancashire, P.E., CEM, LEED APwww.osborn-eng.com
1300 East Ninth St., Suite 1500 441 Wolf Ledges Parkway, Suite 300Cleveland, OH 44114 Akron, OH 44311
216-861-2020 330-535-3132
7/28/2019 AIA Commissioning Presentation
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“Building Commissioning is the
systematic process of ensuring, through documented
verification, that all buildingsystems are installed andperform in accordance with the
design intent.”
DEFINING COMMISSIONINGDEFINING COMMISSIONING
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• Controls Operating Costs & Energy Consumption
• Fewer E&O’s Results in Fewer Change Orders
• Reduces Start-up / Comfort Problems
• Tighter A/E Fees
• Complexity of Modern Buildings:
9 Digital Controls
9 Critical Building conditions9 Technology
WHY IS COMMISSIONING NEEDED?WHY IS COMMISSIONING NEEDED?
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• Quality
• Design Intent Verification
• Value Engineering
• Comfort• Energy Efficiency
• Sustainable Performance
COMMISSIONING GOALSCOMMISSIONING GOALS
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Design Review
Establish design intent. Review specifications and drawings forcompliance with design intent, Sequence of Operations,Maintainability.
Pre-Functional Testing
Coordinate, witness, verify and report to verify if the installation isin accordance with plans and specifications.
Functional TestingCoordinate, witness and report on the operational and functionalperformance of all equipment, systems and subsystems.
Reporting
Identifying deficiencies, and recommended solutions.
Operator Instruction
Verify training required by Contract Documents; hands-onverification
COMMISSIONING OverviewCOMMISSIONING Overview
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Commissioning Report
• commissioning plan
• field installation verification check sheets
• functional performance test check sheets• deficiency reports
• as-built drawings
• shop drawing verification
• operation and maintenance manuals
Warranty Review
11 month walk-through to re-verify operation and performance of allequipment, systems and subsystems.
Post-Commissioning ReportPerform commissioning for systems that require off-season functionalperformance testing. Review overall operation and performance of the system to original commissioning performance records.
COMMISSIONING OverviewCOMMISSIONING Overview
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Pre-Requisite – Fundamental Commissioning
• Must be independent,but can be employed by the Design or
Construction Firms
• The CxA reviews the OPR and BOD documents for clarity and
completeness• At a minimum, must commission the following systems:
•HVAC (including controls)•Lighting and daylighting controls•Domestic hot water systems•Renewable energy systems
Credit – Enhanced Commissioning
• Must be independent and can not be employed by theDesign or Construction Firms
• The Cx reviews design for compliance with the OPR and BOD
• Contractor submittal reviews
• Training verification
• Warranty review
• Develop systems manuals
COMMISSIONING for LEEDCOMMISSIONING for LEED
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Owner's Project Requirements (OPR)
• Owner and User Requirements
• Environmental and Sustainability Goals
• Energy Efficiency Goals
• Indoor Environmental Quality Requirements
• Equipment and Systems Expectations
• Building Occupant and O&M Personnel Expectations
COMMISSIONING for LEEDCOMMISSIONING for LEED
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Basis of Design (BOD)
• System Narrative Descriptions
• Primary Design Assumptions
• Standards Utilized for Design
COMMISSIONING for LEEDCOMMISSIONING for LEED
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What should commissioning cost?
COMMISSIONING BENEFITSCOMMISSIONING BENEFITS
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OSFC Pilot Commissioning Project
Perception – Successful Project
¾ 344,680 Sq. Ft.¾ 157 Deficiencies Found
Construction Cost Savings: $17,430
Operating Cost Savings: $39,330/ year
Cost of Commissioning: $129,900
Simple Payback: 2.8 years
OSFC Funding: 80%
Payback on District’sI nvestment: 5.5 months
MANSFIELD HIGH SCHOOLMANSFIELD HIGH SCHOOL
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89.8
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k B T U
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Lausche DiSalle Ocasek Rhodes Avg. Ohio Building
OFFICE BUILDINGS
BEFORE ENERGY STAR AFTER ENERGY STAR
ENERGY STAR Buildings ProgramOhio Building Authority Facilities
ENERGY USAGE PER SQ. FT. SAVINGS
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COMMISSIONING ExamplesCOMMISSIONING Examples
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I ssues that can be discovered duringdesign reviews that avoid futureproblems
Design PhaseDesign Phase
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• Mechanical Room – I nsufficientaccess space to change filters in Air
Handling Unit
• Underground 100-125 PSI steam pipeanchored on both ends with noexpansion j oint
• Generator exhaust located directlybelow outside air intake
Design PhaseDesign Phase
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• Gas-fired make-up air unit installed inreturn air plenum
• Radiant Floor system w ithoutinsulation beneath floor slab
• Extremely high light levels thatexceed ASHRAE 90.1 (Energy Code)
Design PhaseDesign Phase
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I ssues discovered duringcommissioning that get corrected beforethey become a problem
Construction PhaseConstruction Phase
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• When primary boiler fails,backup boiler would not startautomatically
Construction PhaseConstruction Phase
• Natural gas regulator not vented tothe outdoors – if diaphragm failed,mechanical room w ould have floodedw ith natural gas
• 140 degree water provided to handsinks – code requires 110 degrees max.
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• Air handling unit used forstorage during construction
Construction PhaseConstruction Phase
•Design outside air not being providedto air handling units, could lead to highCO2 levels for occupants
• Economizer controls not w orking
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• Side-stream filter for coolingtower installed directly on floor– not able to be drained
Construction PhaseConstruction Phase
•BAS Graphics – Floor plan on systemwas for the wrong school
• Pumps mounted to base w ith concretenails instead of proper mounting bolts
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Retro-CommissioningRetro-Commissioning
I ssues discovered after constructionthat need to be fixed
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• Chilled water and hot watercoils piped backw ards
Retro-CommissioningRetro-Commissioning
• High velocity air duct installed overstage in auditorium
•Control sensors in high-rise missing
• Actual air balance measured varied byup to 40% from what was reported
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• VAV box reheat coilstoo small
Retro-ConstructionRetro-Construction
• Heating hot w ater boilers undersizedfor building load
• Actual sound system installed lowerquality than what was specified andwhat w as approved in shop draw ings
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Quality Control
Value Engineering
Fewer Start-Up Problems
Energy Efficient Buildings
Better Trained Staff
Increased Comfort
COMMISSIONING BenefitsCOMMISSIONING Benefits
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Questions?
THANK YOUTHANK YOU